Cover date
More unusually, Le Monde is a daily newspaper published the afternoon before its cover date.In the United States, Canada, and the United Kingdom, the standard practice is to display on magazine covers a date which is some weeks or months in the future from the publishing or release date.There are two reasons for this discrepancy: first, to allow magazines to continue appearing "current" to consumers even after they have been on sale for some time (since not all magazines will be sold immediately), and second, to inform newsstands when an unsold magazine can be removed from the stands and returned to the publishing company or be destroyed (in this case, the cover date is also the pull date).The general practice of most mainstream comic book companies since the creation of the comic book in the 1930s was to date individual issues by putting the name of a month (and much later the year as well) on the cover which was generally two months after the release date.[3] In 1989 the cover date and publishing date discrepancy was changed back to two months, though generally each comic book company now uses its own system.